Patent US4084913A successfully refreshed from Google Patents.
Patent US2683133A successfully refreshed from Google Patents.
US2683133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetone formaldehyde resin
Assignee: Harvel Research Corp
•
Filing: 1949-06-14
•
Granted: 1954-07-06
•
Expires: 1969-06-14
Abstract
No abstract record available.
Inventors
- 👤 Mortimer T Harvey
- 👤 Peter L Rosamilia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:30
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C08G2/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
THE PROCESS FOR PRODUCING A RESINOUS REACTION PRODUCT WHICH COMPRISES REACTING UNDER AQUEOUS CONDITIONS, ACETONE AND FORMALDEHYDE WITH THE MOLE RATIO OF ACETONE TO FORMALDEHYDE BEING 1 MOLE OF ACETONE TO ABOUT 3 TO ABOUT 5 MOLES OF FORMALDEHYDE, SAID REACTANTS HAVING A STRONGLY ALKALINE REAGENT ADDED THERETO, SAID REACTION AFTER INITIATION UPON THE APPLICATION OF EXTERNAL HEAT PROCEEDING EXOTHERMICALLY DUE TO THE ADDITION OF A SUFFICIENT QUANTITY OF SAID AGENT THERETO, SAID EXOTHERMIC REACTION REACHING TEMPERATURES IN THE RANGE OF 160-210* F., THE TOTAL AMOUNT OF SAID AGENT EMPLOYED BEING APPROXIMATELY THE ALKALINE EQUIVALENT OF SODIUM HYDROXIDE MEASURING 1 TO 3% OF THE COMBINED WEIGHTS OF SAID ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 3, 1.5 TO 4% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 4, AND 2 TO 4% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 5, THE RESINOUS REACTION PRODUCT PRODUCED THERREBY BEING THERMOSETTING, MEASURING BY WEIGHT AT LEAST 75% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE AND BEING SOLUBLE IN TWICE ITS VOLUME OF WATER.
Claim 2
Dependent Claim
201 words
THE PROCESS FOR PRODUCING A RESINOUS REACTION PRODUCT WHICH COMPRISES REACTING UNDER AQUEOUS CONDITIONS, ACETONE AND FORMALDEHYDE WITH THE MOLE RATIO OF ACETONE TO FORMALDEHYDE BEING 1 MOLE OF ACETONE TO ABOUT 3 TO ABOUT 5 MOLES OF FORMALDEHYDE, SAID REACTANTS HAVING A STRONGLY ALKALINE REAGENT ADDED THERETO, SAID REACTION AFTER INITIATION UPON THE APPLICATION OF EXTERNAL HEAT PROCEEDING EXOTHERMICALLY DUE TO THE ADDITION OF A SUFFICIENT QUANTITY OF SAID AGENT THERETO, SAID EXOTHERMIC REACTION REACHING TEMPERATURES IN THE RANGE OF 160-210* F., THE TOTAL AMOUNT OF SAID AGENT EMPLOYED BEING APPROXIMATELY THE ALKALINE EQUIVALENT OF SODIUM HYDROXIDE MEASURING 1 TO 3% OF THE COMBINED WEIGHTS OF SAID ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 3, 1.5 TO 4% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 4, AND 2 TO 4% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE WHEN THE MOLE RATIO OF ACETONE TO FORMALDEHYDE IS 1 TO 5, THE RESINOUS REACTION PRODUCT PRODUCED THERREBY BEING THERMOSETTING, MEASURING BY WEIGHT AT LEAST 75% OF THE COMBINED WEIGHTS OF ACETONE AND FORMALDEHYDE AND BEING SOLUBLE IN TWICE ITS VOLUME OF WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |